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Green forming with nanoparticles
journal contribution
posted on 2007-01-22, 16:44 authored by Yuncheng Liang, N. Gregory, J.G.P. BinnerThe potential for green forming with nanosized yttria-doped, partially stabilised zirconia (YPSZ)
powder using both uniaxial compaction and colloidal suspensions has been investigated. Green
compacts were fabricated from a Y-PSZ nanopowder, a submicron powder of similar composition and
combinations of the two by die pressing at varying axial stress, with the effect of a micronising
milling process on the green density also being examined. Results indicated that the incorporation of
the nanopowder into the submicron powder increased green density by up to 17% whilst micronising
helped to achieve green densities as high as 60% of theoretical, even with the pure nanopowder. The
zeta potential, viscosity and mean particle size of two different Y-PSZ nanosuspensions were
measured for two different anionic polyelectrolytes, polyacrylic acid (PAA) and polymethacrylic acid
(PMAA). The results showed that both led to flocculation under acidic conditions and hence
increasing viscosity with increasing polyelectrolyte concentration.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Materials
Pages
434739 bytesCitation
LIANG, GREGORY and BINNER, 2004. Green forming with nanoparticles. Key Engineering Materials, 264-268, pp. 2319-2322Publisher
© Trans TechPublication date
2004Notes
This is Restricted Access. This article was published in the journal, Key Engineering Materials [© Trans Tech] and is available at: www.scientific.net.ISSN
1013-9826Language
- en